You should be able to use a USB connection with one computer and a network connection with another.
Please try restarting the Windows computer to see if the unit will be able to print. If any errors occur on the Windows computer, document them exactly as they appear so we can try to assist you further.
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07/31/2023: New firmware updates are available.
05/31/2023: New firmware updates are available.
05/18/2023: New firmware updates are available.
04/20/2023: New firmware version 1.4.1 is available for EOS R3
03/30/2023: New firmware updates are available.
2/07/2023: New product announcements!EOS R8 EOS R50RF-S55-210mm F5-7.1 IS STMRF24-50mm F4.5-6.3 IS STMRF15-30mm F4.5-6.3 IS STM